The NHL postseason is a crazy time, no doubt. While you rarely see a No. 8 seed beat a No. 1 seed in the NBA, it happens more often on ice. So, if we look at previous upset models, what can we learn about 2010's postseason pucks? That's what Puck Prospectus is out to explain. This article focuses on the Eastern Conference. You can see the Western Conference upset index here.

The Washington Capitals are going into the first round against an opponent over whom they enjoyed a 33-point advantage in the regular-season standings. Of the 24 "giants" that entered the postseason with at least a 30-point advantage since 1980, only three were laid low: the 1981-82 Edmonton Oilers, the 1985-86 Philadelphia Flyers and the 1990-91 Chicago Blackhawks.

What happened to those three, and could the same thing happen to Washington this year?